Improved Shaped Metallic Element for Making Laminations and Lamination Obtained by Joining a Plurality of Said Improved Shaped Metallic Elements

Abstract

A shaped metallic element ( 1 ) for making laminations ( 100 ) of a stator ( 200 ) and/or a rotor ( 300 ) of a rotary electric machine ( 400 ) or for making the laminated ferromagnetic core ( 500 ) of a static electric machine, including two sides ( 2, 3 ) suited to be fixedly joined to corresponding sides ( 2, 3 ) of two shaped metallic elements ( 1 ) arranged so that they are adjacent to said shaped metallic element ( 1 ). In the shaped metallic element ( 1 ) the two sides ( 2, 3 ) have a shaped profile ( 4 ) matching the shaped profile of the sides ( 2, 3 ) of the adjacent shaped metallic elements ( 1 ) so that the shaped metallic elements ( 1 ) can be fixedly coupled with each other through interference.

What is claimed is: 
     
         1 . Shaped metallic element ( 1 ) for making laminations ( 100 ) for a stator ( 200 ) and/or a rotor ( 300 ) of a rotary electric machine ( 400 ) or for a laminated ferromagnetic core ( 500 ) of a static electric machine, of the type comprising at least two sides ( 2 ,  3 ) suited to be fixedly joined to corresponding sides ( 2 ,  3 ) of at least two shaped metallic elements ( 1 ) arranged so that they are adjacent to said shaped metallic element ( 1 ), wherein said at least two sides ( 2 ,  3 ) have a shaped profile ( 4 ) matching the shaped profile of the sides ( 2 ,  3 ) of the adjacent shaped metallic elements ( 1 ) so that said shaped metallic elements ( 1 ) can be fixedly coupled with each other through interference. 
     
     
         2 . Shaped metallic element according to  claim 1 , wherein said matching shaped profile ( 4 ) obtained on each one of said sides ( 2 ,  3 ) is a comb-shaped profile. 
     
     
         3 . Shaped metallic element according to  claim 1 , wherein said matching shaped profile ( 4 ) obtained on a first one of said sides ( 2 ,  3 ) of said shaped metallic element ( 1 ) is a dovetail profile and the matching shaped profile ( 4 ) of the second one of said sides ( 2 ,  3 ) is complementary to the dovetail profile ( 4 ) defined on said first side ( 2 ,  3 ). 
     
     
         4 . Shaped metallic element according to  claim 1 , wherein said shaped profile ( 4 ) is provided on the entire length of said two sides ( 2 ,  3 ). 
     
     
         5 . Lamination ( 100 ) for making stators ( 200 ) or rotors ( 300 ) of a rotary electric machine ( 400 ) or for making a laminated ferromagnetic core ( 500 ) of a static electric machine, comprising a plurality of said shaped metallic elements ( 1 ) coupled with each other through interference at the level of said matching shaped sides ( 2 ,  3 ). 
     
     
         6 . Stator ( 200 ) of a rotary electric machine ( 400 ) of the type comprising a plurality of laminations ( 100 ) stacked on one another, wherein said laminations ( 100 ) are of the type according to  claim 5 . 
     
     
         7 . Rotor ( 300 ) of a rotary electric machine ( 400 ) of the type comprising a plurality of laminations ( 100 ) stacked on one another, wherein said laminations ( 100 ) are of the type according to  claim 5 . 
     
     
         8 . Rotary electric machine ( 400 ) of the type comprising a stator and a rotor arranged coaxial with each other, wherein said stator ( 200 ) is of the type according to  claim 6 . 
     
     
         9 . Rotary electric machine ( 400 ) of the type comprising a stator and a rotor arranged coaxial with each other, wherein said rotor ( 300 ) is of the type according to  claim 7 . 
     
     
         10 . Laminated ferromagnetic core ( 500 ) of a static electric machine of the type comprising a plurality of laminations ( 100 ) stacked on one another, wherein said laminations ( 100 ) are of the type according to  claim 5 . 
     
     
         11 . Static electric machine of the type comprising a laminated ferromagnetic core ( 500 ), wherein said laminated ferromagnetic core ( 500 ) is of the type according to  claim 10 . 
     
     
         12 . Method for making a lamination ( 100 ) for making stators ( 200 ) or rotors ( 300 ) of a rotary electric machine ( 400 ) or for making a laminated ferromagnetic core ( 500 ) of a static electric machine, the method comprising the steps of:
 arranging a plurality of shaped metallic elements ( 1 ) of the type according to  claim 1 , in a template ( 600 ) that reproduces the shape of said stator ( 200 ) or of said rotor ( 300 ) or of the laminated ferromagnetic core ( 500 );   pressing said shaped metallic elements ( 1 ) arranged in said template ( 600 ) so that the sides ( 2 ,  3 ) of said adjacent shaped metallic elements ( 1 ) are coupled with each other through interference.   
     
     
         13 . Apparatus ( 700 ) for making a lamination ( 100 ) of the type according to  claim 5 , comprising:
 a loading unit ( 701 ) provided with a first rotary plane ( 702 ), preferably circular in shape, revolvingly coupled with drive means ( 705 ) at the level of its centre ( 704 ) by way of a transmission shaft ( 706 ), said first rotary plane ( 702 ) being provided, at the level of its underside ( 707 ), with a plurality of housings ( 708 ) distributed in sequence close to its perimeter ( 709 ) and suited to house and hold a shaped metallic element ( 1 ), said first rotary plane ( 702 ) being furthermore suited to be set rotating in a discrete way by said drive means ( 705 ) in such a way as to define a plurality of angular positions at the level of which each one of said housings ( 708 ) is suited to stop temporarily, said angular positions comprising a first angular position in which said shaped metallic element ( 1 ) is loaded in one of said housings ( 708 ) and a second angular position at the level of which said shaped metallic element ( 1 ) is unloaded from said housing ( 708 );   at least one processing unit ( 713 ) provided with a second rotary plane ( 714 ), which revolvingly supports on its upper side ( 715 ) three templates ( 600 ) hinged along the directions defined by three radiuses (r) of said second rotary plane ( 714 ) diverging from one another by 120°, said second rotary plane ( 714 ) being suited to be set rotating in a discrete way so that each one of said templates ( 600 ) is suited to temporarily assume three static positions diverging from one another by 120° and defined as the loading position of the template ( 600 ), the pressing position of the shaped metallic elements ( 1 ) and the collection position of the lamination ( 100 );   said first rotary plane ( 702 ) of said loading unit ( 701 ) and said second rotary plane ( 714 ) of said processing unit ( 713 ) being mutually coupled so that each one of said housings ( 708 ), when it assumes said second angular position, is superimposed to a seat ( 601 ) provided in said template ( 600 ) arranged, at the same instant, in said loading position.   
     
     
         14 . Apparatus ( 800 ) for making a lamination ( 100 ) of the type according to  claim 5 , the apparatus comprising:
 a processing unit ( 801 ), provided with a rotary plane ( 802 ), preferably circular in shape, revolvingly coupled with drive means ( 805 ) through a transmission shaft ( 806 ), said rotary plane ( 802 ) being provided, at the level of its upper side ( 803 ), with at least four templates ( 600 ) arranged along the directions defined by four radiuses (r) of said rotary plane ( 802 ) diverging from one another by 90°, said rotary plane ( 802 ) being suited to be set rotating in a discrete manner, so that each one of said four templates ( 600 ) can temporarily assume four static positions diverging from one another by 90°, defined first loading position (A) of said template ( 600 ), second loading position (B) of said template ( 600 ), pressing position (C) of the shaped metallic elements ( 1 ) and collection position (D) of said lamination ( 100 );   a loading unit ( 810 ) comprising a storage unit suited to contain a plurality of said shaped elements ( 1 ) and a plurality of conveyors ( 812 ) operatively connected to said storage unit, each one of said conveyors ( 812 ) having, at the level of its distal end ( 813 ) with respect to said storage unit, an opening ( 814 ) that faces a specific seat ( 601 ), distinct from the other seats ( 601 ), provided in one of the two templates ( 600 ) arranged at the level of said first or of said second loading position (A, B), so that when a template ( 600 ) passes beyond both said two loading positions (A, B), there is a single shaped metallic element ( 1 ) in all its seats ( 601 ).